Diaphragm damper device, holding member therefor, and production method for diaphragm damper device

Abstract

A holding member for a diaphragm damper device including a plurality of diaphragm dampers is formed from an elastic member. The holding member includes a band that can be elastically tightened to circumferential walls of two adjacent ones of the diaphragm dampers and hooks arranged on two sides of the band. The hooks elastically hold each of the diaphragm dampers that are stacked.

The invention claimed is: 
     
       1. A holding member for a diaphragm damper device including a plurality of diaphragm dampers that are stacked in a vertical direction, wherein
 each of the diaphragm dampers includes a pair of diaphragms and a high-pressure chamber defined by the pair of diaphragms, wherein high-pressure gas is enclosed in the high-pressure chamber, and circumferential portions of the pair of diaphragms are overlapped with and fixed to each other, 
 the holding member is formed from an elastic member, and 
 the holding member comprises: 
 a band that extends around an entire circumference of two adjacent ones of the diaphragm dampers to be elastically tightened to circumferential walls of the diaphragm dampers in the circumferential direction; and 
 hooks arranged on two sides of the band, wherein the hooks elastically hold the two adjacent ones of the diaphragm dampers that are stacked in the vertical direction, respectively. 
 
     
     
       2. The holding member for the diaphragm damper device according to  claim 1 , wherein the band includes a plurality of ridge-shaped bent portions that are bent in a direction orthogonal to a longitudinal direction. 
     
     
       3. The holding member for the diaphragm damper device according to  claim 2 , wherein
 the band includes a plurality of narrow portions having a dimension in a widthwise direction orthogonal to the longitudinal direction of the band that is smaller than dimensions of other portions of the band, and 
 the bent portions are arranged in the narrow portions of the band. 
 
     
     
       4. The holding member for the diaphragm damper device according to  claim 2 , wherein
 the band includes a plurality of holes that are spaced apart from each other in the longitudinal direction of the band, and 
 the bent portions are located at positions overlapping the holes. 
 
     
     
       5. The holding member for the diaphragm damper device according to  claim 1 , wherein the hooks are paired at the two sides of the band. 
     
     
       6. The holding member for the diaphragm damper device according to  claim 1 , wherein the band includes a first end provided with an engagement portion and a second end provided with the hook that is configured to engage the engagement portion. 
     
     
       7. The holding member for the diaphragm damper device according to  claim 1 ,
 wherein the band includes: 
 a plurality of narrow portions having a dimension in a widthwise direction orthogonal to the longitudinal direction of the band that is smaller than dimensions of other portions of the band; or 
 the band includes a plurality of holes that are spaced apart from each other in the longitudinal direction of the band. 
 
     
     
       8. A diaphragm damper device comprising:
 a plurality of diaphragm dampers that are stacked in a vertical direction, wherein each of the diaphragm dampers includes a pair of diaphragms and a high-pressure chamber defined by the pair of diaphragms, high-pressure gas is enclosed in the high-pressure chamber, and circumferential portions of the pair of diaphragms are overlapped with and fixed to each other; and 
 a holding member that integrally holds the diaphragm dampers and is formed from an elastic member, wherein the holding member includes 
 a band that extends around an entire circumference of two adjacent ones of the diaphragm dampers to be elastically tightened to circumferential walls of the diaphragm dampers in the circumferential direction, and 
 hooks arranged on two sides of the band, wherein the hooks elastically hold the two adjacent ones of the diaphragm dampers that are stacked in the vertical direction, respectively. 
 
     
     
       9. The diaphragm damper device according to  claim 8 ,
 wherein the band includes: 
 a plurality of narrow portions having a dimension in a widthwise direction orthogonal to the longitudinal direction of the band that is smaller than dimensions of other portions of the band; or 
 the band includes a plurality of holes that are spaced apart from each other in the longitudinal direction of the band. 
 
     
     
       10. A method for manufacturing a diaphragm damper device, the method comprising:
 forming a first diaphragm damper that includes a pair of diaphragms and a high-pressure chamber defined by the pair of diaphragms, wherein high-pressure gas is enclosed in the high-pressure chamber; 
 forming a second diaphragm damper that includes a pair of diaphragms and a high-pressure chamber defined by the pair of diaphragms, wherein high-pressure gas is enclosed in the high-pressure chamber; 
 stacking the first diaphragm damper and the second diaphragm damper in a vertical direction; 
 preparing a holding member formed from an elastic member, wherein the holding member includes a band and first and second hooks arranged on two sides of the band; and 
 integrally holding the first diaphragm damper and the second diaphragm damper by extending the band of the holding member around an entire circumference of the first and the second diaphragm dampers, elastically tightening the band to circumferences walls of the first and the second diaphragm dampers in the circumferential direction, and elastically holding outer circumferential ends of the first and second diaphragm dampers with the first and second hooks, respectively. 
 
     
     
       11. The method according to  claim 10 ,
 wherein the band includes: 
 a plurality of narrow portions having a dimension in a widthwise direction orthogonal to the longitudinal direction of the band that is smaller than dimensions of other portions of the band; or 
 the band includes a plurality of holes that are spaced apart from each other in the longitudinal direction of the band.